Electric locomotive



Sept. 18,1928. i 1,684379 c. o. BOWEN ELECTRIC LocoMoTIvE Filed may 22. 1926 i zsheets-sneet 1 v- Hl .G5 .l

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Patented Sept. 18, 1928.

Unirse srerns PATENT orifice."

CHARLES O. BOWEN, OF- DORA, ALABAMA, ASSIGNOR TO WALTER B. MILLER,

' TRUSTEE, OF W LLlTS CREEK, KENTUCKY.

ELECTRIC LOCQMOTIVE.

Application lecl May 22, 1926. Serial No. 111,060.

This invention relates particularly to electric locomotives used for hauling mine cars and for similarly industrial work, the locomotive receiving power trom an overhead trolley wire through a trolley'pole mounted on the locomotive.

rlhe object of the invention is to provide mechanism whereby the trolley pole may be conveniently controlled by the motorman. This` mechanism is especially adapted to so controlling the locomotive as to avoid accidents to the equipment and to workers.

In the accompanying drawings,

Fig. l is a side elevation showing the i'orward part of a mine locomotive. to which my improved trolley pole control mechanism is applied;

Fig. 2 is ah plan of the structure shown in Fig. l; y

Fig. 3 is an upright transverse section on the line, 3*3, of Figs. l and 2, looking teward the right;

Fig. l is an upright section on the line, 4 4, of Fig. 8, looking toward the right;

Fig. 5 is a horizontal section on theline, 5 5, et Fig. 4; v

Fig. 6 is a horizontal section on the line, 6-6, oi Fig. il.

Referring to said drawings, A is the body ot the locomotive. A1 is the front platform. A2 the liront butler. A3 is a part et one olf. the trent wheels.

B is the trolley pole. C is a` bracket having an uprighttlat body and an upper horizontal flange, C1, and a lower horizont-al flange, C2. Said bracket is secured to the front upright face, At, of the locomotive body, A, by means of cap screws, C3.

A cylindrical barrel is composed of an upper section, D, anda lower section, D1. The meeting ends of these sections overlap and are screw-threaded to join them rigidly upon each other. The upper section, D, extends through the upper flange, C1, in manner to permit rotation oil' said section in said flange. Above said flange, a` hand wheel, lV, has a hub, D2, surrounding the section, D. Said hub is adjustably secured to said section by meansvof a set-screw, D3. The lower section, D1, extends through the lower rflange, C2, in manner permitting rotation in said flange, A cap, D, is screw threaded around theflower end Voztl-he section, The hub, D?, and

the cap, D4, are separated from e/ach other far enough to allow some endwise movement of the barrel.

A ring, D6, is threaded around the lower end o'f the barrel section, D, and forms the upper half of a ball bearing. A ring or collar. D7, loosely surrounds the section, D1, and `forms the lower halt ot said bearing. Balls, DS, are coniined in annular grooves or race-ways formed in the opposing faces of said rings. An expanding coiled spring, D, loosely surrounds the barrel section, D1, and bears against the upper face of the lower flange, C2, and against the lower face ot the bearing collar., D7. The upward pressure ot the spring. D9, is to be sufficient to largely or substantially support the barrel whereby trictional contact between the hub, D2, and the upper face of the flange, C1, is reduced or avoided, and rotation of `the barrel is ree sisted only by the small trictional resistance exerted by the roller bearing. The upward pressure of this spring, D9, may be varied by turning the threaded upper ring, D, on the barrel section, D, for moving said ring upward or downward, according to whether the spring pressure is to be increased or diminished. It is intended that the spring, D9, and the lower ring, D7, will not rotate. Thus the barrel and the parts seated thereon are supported on a yielding` or cushioned bearing.

rlhe upper end oi" the section, D, has a hori zontal head or cross wall, D5, which is centrallyapcrtured to form a bearing 'lor an upright slidable rod, E. n The cap. D4, is cen trally apertured to make a bearing-for the lower part of said rod, E. Immediately above the bottom of the cap D4, said rod has an annular shoulder, El, which is adapted to rest on said bottom and thereby limit downward movement of said rod.

A channel form ehaiigl?, has it-sbottom web secured immovably on the upper end of the barrel section, D. Said chair has two up-A right parallel flanges. An .expanding coiled spring, E2, surrounds the rod, E. within the barrel and Vhas its lower end resting` on the annular shoulder, E1, while its upper end bears against the cross wall, D5. of the upf per barrelsection, D. Said spring tends to constantly pressvthe rod, E, downward as :tar as permitted. bythe annular shoulder., Ei.

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But said spring is adapted to yield to permit upward movement of the rod, E, when lifting force is applied to the lower end ofsaid rod, as will be described further on.

The lower end of the trolley pole, B, eX- tends between the flanges of the chair, F, and is pivoted to said iianges by a pintle, B1, extending horizontally through said flanges and said pole. The pole extends into the space between the flanges of the chair and said extended portion is bifurcated, the rod, E, being between the arms thus formed. A nut, E3, is threaded around the rod, E, below this part of the pole` and a nut, E, is threaded around saidrod above this part of the pole. These nuts are spaced from each other a suitable distance to so engage the pole as to permit the pole to tilt when the rod, E, is moved endwise; As above indicated, the spring, E2, normally holds the rod, E, in its lower position whereby the lower end of the trolley pole is held down and the upper or long end of the pole is held in the elevated Cin position. It will now alsobe seen that while the locomotive is in motion on the track, de-

pressions and elevations in the trolley wire will cause downward'and upward movement of the upper end or long` arm of the trolley pole, such movement of the trolley pole being permitted by the yielding of the spring, E, for endwise movement ofthe rod, E. Such yielding movement of the trolley pole is also needed when the locomotive passes over irregularities in the track.` y y It will now be seen that there are two elements which tend to support the trolley pole ,in contact with theitrolley wire and A both of which elements may yield to allow downward movement of the trolley pole during the travel ofithe locomotivethese two 1elements being the spring, D, and the spring,

For lowering the upper or free end of the trolley pole, B, away from the trolley wire or similar electricity conductor, the rod, E, is to be pushed upward, whereby the nut, E3, is made to push the fork of the trolley pole upward, whereby the trolleypole is made to tilt on the pintle, B1.

The'horizontal bar, G,is used to lift the rod, E, On oneend of said bar is a socket, G1, in 'which rests the lower end of saidirod. The other end of said bar is pivoted at G2 to the upper end of a link, G3, the lower end of which is pivoted at G4 to a horizontal base bar, G5, which is secured to the face, A, of the locomotive body by means of cap-screws, G. Near theend of the bar, G, which' bears thesocket, G1, the upper end of a toggle link, G7, is coupled to said bar. The lower end of said link is coupled to theupper end .of the companion toggle link, G3, thelower end of which is coupled to the base bar, G5. The toggle links are inclined away from the upright 1ink,G3. To eifectupward movement of the adjacent end of the horizontal bar, G, the meeting ends of the toggle links are to be moved toward the link, G3. This is accomplished by means of a-horizontal rod, H, having one end coupled to the toggle at the meeting ends of the links and having its other end coupled to the short arm, H, of a horizontal., angle lever, H3, the arm, H4, bcing horizontal and at an angle to the body of said lever whereby a. bellcrank is formed. At said angle said lever is pivotedto the horizontal arm of a bracket. H2, which is fixed on the'base bar, G5.V The long arm of the lever, H3, issupported by a horizontal rack` comprising a lower member, H5, and an upper member. HH The lower member is of inverted U`f`orrn and has one arm secured to the base bar, G5, by means` of a bolt or rivet, H7, and has its other arm secured tothe locomotive body platform, A1, means of a cap screw, H3. The upper member, H3, is also of inverted U-form and is placed upon the lower member, H3, the arms ofthe upper lever rearward will cause the straightening l of the toggle and the lifting of the adjacent end of the bar, G, whereby the rod, E, is lifted and the trolley pole is tilted for lowering the outer end of the pole. Therack, H3, H, has upright apertures, H, which are adapted to receive pins, H10, adapted to serve as stops for limiting the movement of the lever, H3. On the link, H, is a turnbuckle, H1, by means of which the length :of said link may be varied to adjust this lifting mechanism relative to the rod, E.

The lever, H3, isso located as to allow it to be shifted promptly by the foot of the mo-V tormanV for prompt releasing of the trolley pole from the trolley wire, if this becomes de` Vsirable while the locomotive is running. This lever, H3, may also be promptly usedvin this way `when the trolley pole becomes accidentally disengaged from the trolley wire. In that case it is desirable to promptly lower the trolley pole to avoid damage to the pole and to any structure' at the mine ceiling. `When the trolley pole has thus been accidentally disengaged from the trolley wire, the motorman first effects thewlowering offthe'trolley pole and then, by turning the hand wheel, W, swinging the pole laterallyuntil it is in position to be allowed to rise to engage the trolley wire. f

Whenever the trolley pole is to be changed trom one trolley wire to another, he motoru man may, without changing his position, lirst lower the trolley pole bymoving` the lever, H3, and then swinging the trolley pole sidewise by engaging the hand wheel, W. Vhenever it is desired to lieep the trolley polein the lowered position, it is brought into that` position by moving the lever, H3, in theappropriate direct-ion and then secured in that position by means ot a stop pin, H10, inserted in one of the apertures, H.

I claim as my invention:

l. In an electric locomotive, the combination ot a pivoted trolley pole, downwardacting elastic means constantly tending to tilt the pole to litt its tree end, and operatoractuated means adapted to act upward in opposition to said elastic means to cause the tilting ot said pole to lower its tree end, substantially as described.

2. 'In an electric locomotive, the combination ot a pivoted trolley pole, elastic means constantly tending to tilt the pole to litt its :tree end, and operator-controlled means including a toggle adapted to act in opposition to Vsaid elastic means tocause the tilting of said pole to lower its free end, substantially ,as described.

cluding an operator-actuated lever adaptedV to act upward in opposition to said elastic means to cause the tilting ot said pole to lower its tree end, substantially vas described.

el. In an electric locomotive, the combination ot a pivoted trolley pole, downwardacting elastic means constantly tending to tilt the pole to lift its tree end, means including an :merator-actuated lever adapted to ract upward in opposition to said elastic means to cause the tilting ot said pole to lower its tree end, and means for securing` said lever, substantially as described.

In an electric locomotive, the combination oit a trolley pole pivoted between its ends, a reciprocable rod having one end in engagement with the short arm of the pole, a spring constantly tending to press said rod away trom the pole, and operator-actuated means engaging said rod :tor pressing said rod upward in opposition to said spring, substantially as described.

6. In an electric locomotive, the combination of a trolley pole pivoted between its ends, a reciprocable rod having one end in engagement with the short arm of the pole, a spring constantly tending to press said rod away Jfrom the pole, a bar hinged at one end and having its other end in engagement with the tree end of said rod, and operatorcontrolled means tor moving the free end ot said bar, substantially as described.

7. In an Velectric locomotive, 'the combination ot a trolley pole pivoted between itsends, a reciprocable rod having one end in engagement with the short arm ot' the pole, a spring constantly tending to press said rod away from the pole, a bar hinged at one end and having its other end in engagement with said rod, and operator#controlled means including a toggle tor moving the tree end ot said bar, substantially as described. u

8. In an electric locomotive, the combination oi a trolley pole pivoted between its ends, a reeiprocable rod having one end in engagement with the short arm of the pole, a spring constantly tending to press said rod away from the pole, a bar hinged at one end and o having its other end in engagement with said rod, means including a toggle for moving the ltree end of said bar, and an operator-controlled lever in operative relation with said toggle mechanism, substantially as described. 9. In an electric locomotive, the combination ot an upright rotatable support, a trolley pole pivoted on said support, downward-actelastic :meansY constantly tending. to tilt the pole to litt its tree end, and operator-y actuated meansadapted t-o 'act upwardl in opposition to said elastic means to cause the tilting ot said pole to lower its free end, substantially as described.

l0. In an electric locomotive, the combina! tion ot a stationary bracket, a trolleyvpole pivoted 'on said bracket, downward-acting elastic means constantly tending` to tilt the pole to litt its rtree end, and operator-actuated means adapted to act upward in opposition to said elastic means to cause the tilting ot said pole to lower its free end, substantially as des' scribed. Y Y

1l. In an electric locomotive, the combination of a bracket, an upright rotatable Vsupport on said bracket, a trolley pole pivoted on said support, downward-acting elastic means constantly tending to tilt the pole to lift its treeend, and operator-actuated means adapted to act upward in opposition t-o said elastic means to cause the tilting ot the pole to lower its free end, substantially as described. 12. In an electric locomotive, the combination of a bracket, an upright rotatable support on said bracket, a spring supporting said support, a trolley pole pivoted on said support, downward-acting elastic means constantly tending to tilt the pole to litt its tree l end, and operator-actuated means adapted to act upward in opposition to said elastic means to cause the tilting of the pole to lower its tree end, substantially as described.

18. In an electric locomotive, the combination ot a bracket having two apertured iianges, a barrel extending through the apertures of said flanges and rotatable therein, means limiting upright movement of the barrel, a. rod extending through said barrel and making engagement with the pole, a spring 1n engagement with said rod totend stantially as described.

to pressthe rod downward, and operatorcontrolled means for pressing said rod upward, substantially as described.

14. In an electric locomotive, the combination of a ,bracket having two apertured flanges, a barrel extending through the apertures of said flanges and rotatable therein, a spring supporting said barrel, means limiting upright movement of the barrel, a rod extending through saidbarrel andmaking engagement with the pole, a spring in engagement wtih said rod to tend to press the v Vtion of a bracket having two apertured flanges, a barrel extending through the apert tures of. said flanges and rotatable therein, a sprino' supporting the barrel, means limiting uprigtlitmovement of the barrel, a chair seat ed on said barrel, a trolley pole pivoted on said chair, a rod extending through said barrel and makingengagement with the pole, a spring in engagement with said rod to tend to press the rod downward, and operator-V controlled means for pressing said rod upward, substantially as described.

17. In an electric locomotive, thelcombination of a bracket, a rotatable support extending through said bracket, a spring supporting said support, a hand wheel having a hub surrounding and fixed onsaid support above the bracket, a cap on the lower end of said support, a trolley pole pivoted on said su port, elastic means constantly tending to ti t the pole to lift its free end, and operatorcontrolled means adapted to act in opposition to said elastic means to cause the tilting of said pole to lowerits free end, substantially as described.

18. In an electric locomotive, the combina-V tion of a rotatable barrel, aspring surrounding and supporting said barrel, a trolley pole pivotally supported on said barrel, elastic means supported by said barrel and constantly tending to tilt the pole to lift its free end, and operator-controlled means adapted toact in opposition to said elastic means to cause the tilting of said pole to lower its free',

end, substantially as described.

19. In an electric locomotive, the combination of a rotatable barrel, an anti-friction bearing surrounding the barrel, a spring surrounding the barrel and sup orting said bearing, a trolley pole pivotal y supported on said barrel, elastic means supported by said barrel and constantly tending to tilt the pole to lift its free end, and ,operator-com` trolled means adapted to act in opposition to said elastic means to cause the tilting of said pole .to lower its freeend, substantially as described.

, 20. In an electric locomotive, the combination of a rotatable barrel, a bearing ad-` justable on the barrel,.a spring surrounding the barrel and supporting said bearing, a trolley pole pivotally supported on said ,barrel, elastic means supported by said barrel and Constantly tending totilt the pole to lift its free end, and operator-controlled means adapted to .act in opposition to said elastic means to cause the tilting of said pole to lower its free end, substantially as described.

In testimony whereof I have signed my name, this 10th day of May, in the year one thousand nine hundred and twenty-six.

` CHARLES O. BOWEN. 

